Home / 21,635.90-29,859.62-13,136.04

Finding the Fourth Proportional to 21,635.90, 29,859.62 and 13,136.04

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Solution

The fourth proportional to 21,635.90, 29,859.62 and 13,136.04 is: 18,129.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.90 : 29,859.62 = 13,136.04 : x
  2. Step 2: Convert to fraction form
    21,635.90/29,859.62 = 13,136.04/x
  3. Step 3: Cross multiply
    21,635.90x = 29,859.62 × 13,136.04
  4. Step 4: Simplify right side
    21,635.90x = 392,237,097.02
  5. Step 5: Solve for x
    x = 392,237,097.02/21,635.90
  6. Step 6: Final answer
    x = 18,129.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.